LIV120

The LIV120 is a powerful but low cost pulsed / QCW / CW test system for use in the lab as well as for OEM applications, ideal for - Diode characterization - Quality control of incoming goods - OEM We offer this instrument with a variety of end stages covering current ranges from 250mA up to 20A ...Read more

The LIV120 is a powerful but low cost
pulsed / QCW / CW test system for use in the
lab as well as for OEM applications, ideal for

- Diode characterization

- Quality control of incoming goods

- OEM

We offer this instrument with a variety of end
stages covering current ranges from 250mA
up to 20A in a compact enclosure and up to
1200A in 19” rack enclosures. The LIV120
uses our extensive range of OPM150 laser
power detector heads.

The measurement cycle typically takes less
than 1s including the data transfer to the host
computer.

CHARACTERISTICS

Pulsed, QCW and CW testing including burn-in
Maximum currents: 250mA up to 1200A
Maximum number of current steps: 4000
Measures optical power, laser voltage,
  laser current and monitor diode current
Interface: USB
Throughput: typically 1s per device



The LIV120 is a powerful but low cost pulsed / QCW / CW test system for use in the lab as well as for OEM applications, ideal for

- Diode characterization

- Quality control of incoming goods

- OEM

We offer this instrument with a variety of end stages covering current ranges from 250mA up to 20A in a compact enclosure and up to 1200A in 19” rack enclosures. The current ranges 250mA to 2A are forced air cooled. Above 2A in the compact enclosure, the unit is liquid cooled. Please contact us if liquid cooling is required for the low current versions.

The LIV120 uses our extensive range of OPM150 laser power detector heads with all of the comfort of intelligent head technology for cost efficient swapping of detector heads. This feature is very useful when testing a wide range of wavelengths or when testing free beam and fibre coupled lasers.

The measurement cycle typically takes less than 1s including the data transfer to the host computer.

PRINCIPLES OF OPERATION

A complete parameter set for a given measurement protocol may be uploaded to the LIV120. The LIV120 then takes over the measurement procedure. The unit drives the laser with the given prescription and performs the data acquisition and storage. The LIV120 operates both in CW and pulsed modes:                       

CW LIV mode

CW-LIV mode 

pulsed LIV mode

Pulsed LIV mode

Many laser diodes of the same type may now be tested in this manner with very high throughput.

The LIV120 is capable of running in the so-called soft pulse mode. This means that the current between pulses in pulsed mode operation does not drop down to zero, but rather to the value of the minimum current set by the operater. Note the very clean, square shape of the current pulses.   

 

current output1    current output2 
 Current output (min. = 0)    Current output (min. ≠0)

 

The burst mode is used to run the driver at constant current with a single pulse (or step) width and pulse separation during the whole burst. All parameters (power, currents and voltage) are measured in this mode. Schematically this appears as follows: 

CW mode

CW-burst mode 

 

pulsed burst mode

Pulsed burst mode

The burst mode is useful for lifetime testing, checking the thermal contact on a device or for generating light for a certain length of time for other measurements such as smile, near field / far field patterns or spectra.

Artifex Engineering supports this product with a custom connection line or contact card configuration service.

FIELDS OF APPLICATION

Applications include laser diode characterization after submounting or packaging, inspection of incoming goods and for OEMs. The software delivered with the unit allows for one-click generation of a full pdf data sheet for the device under test.

Maximum currents: 250mA up to 1200A

Wavelength range: 250-1100nm; 400-1650nm

Simultaneous spectrum measurement

We will gladly adapt, for example, the wavelength or the current to suit your application. Let us know your requirements.

Integrating spheres

Connection lines

Mounts

TECs and TEC drivers

Spezifikationen LIV120